Water Testing Results
Summer 2008

Merrimack and Souhegan Rivers
E-Coli Bacteria in Colonies per 100 ml. of Sample

Bacteria levels below 88 colonies per 100 ml. are considered safe for public swimming areas. Therefore levels above 88 colonies per 100 ml. are colored in red.

CFS: The water flow volume in the rivers is measured in Cubic Feet per Second.

TNC: To numerous to count.

NA: Entries labeled NA are not available. The e-coli counts are either not available because of a contaminated, lost, or destroyed sample, or because no one collected the water sample. There may be no volunteer for a particular site, or a volunteer might have been out of town or unable to collect the sample. If you wish to help reduce the number of N/A entries and can collect a few water samples on a Tuesday morning, call George May at 883-3409 or email georgemay (at) comcast (dot) net.
Water Sampling Dates
Locations and Measurements 6/10/08 6/23/08 7/8/08 7/22/08 8/5/08 8/19/08 9/2/08 9/16/08

Souhegan River Sites
Ashburnham, Ma
Billy Ward Pond
24 62 3 20
New Ipswich
River Road above Water Loom Pond
115 N/A 133 488
New Ipswich
Highbridge
32 160 33 62
Greenville
Above Greenville Mill Pond
104 410 46 344
Greenville
Downtown Greenville upstream of WWTP
33 1119 26 1046
Greenville
Green Bridge below Greenville WWTP
50 980 10 648
Wilton
Below the Horseshoe
N/A 1119 41 547
Wilton
Downtown
N/A 1553 34 980
Milford
Pine Valley Mill
37 1986 31 1100
Milford
Behind Hayward Field
N/A N/A N/A 870
Milford
Souhegan Valley Boys & Girls Club
172 2419 88 N/A
Milford
Swing Bridge
N/A 1986 N/A 1300
Milford
Behind Riverside Cemetery
77 1986 94 1400
Milford
Behind Lorden Plaza
108 2419 140 2400
Amherst
Amherst Country Club
76 2419 170 1700
Amherst
Conservation land on Fairway Road
N/A N/A N/A 550
Amherst
Boston Post Road Canoeport
91 2419 83 1300
Merrimack
Indian Ledges, Davidson Road
31 >2420 51 1414
Merrimack
Turkey Hill Bridge
47 >2420 58 770
Merrimack
West Chamberlain Rd.
N/A 2420 78 866


Purgatory Brook Site

Lyndeborough/Mont Vernon


Merrimack River Sites

Manchester
Above Amoskeag Dam
N/A 108 N/A 236
Manchester
Arms Park
N/A 228 N/A 173
Manchester
Upstream of Piscataquag River
N/A N/A N/A N/A
Litchfield
Goffs Falls
36 1300 27 1414
Merrimack
Depot Street
N/A 1203 25 345
Merrimack
Upstream of Souhegan River
26 1733 18 291
Merrimack
Thornton's Ferry Boat Ramp
35 >2420 25 210
Merrimack
Cromwells Falls
N/A N/A N/A N/A
Nashua
Greeley Park Boat Ramp
24 2419 20 107
Nashua
Taylors Falls Bridge
64 920 38 235
Nashua
Sagamore Bridge
30 770 25 1046
Hudson
Pheasant Lane Mall
N/A N/A N/A N/A
Tyngsboro
Upstream of Tyngsboro Bridge
N/A 1986 32 >2419
Upper Souhegan current/historic flow (CFS) 407/25 50/13
Lower Souhegan current/historic flow (CFS) 810/98 85/60
Merrimack current/historic flow (CFS) 3640/2560 2750/1810
Rainfall
Air Temperature 17 oC/62 oF
Water Temperature: Merr.
                                Souh.
16 oC/61 oF
16 oC/61 oF


Nashua River Sites

Location 6/21/08 7/xx/08
Pepperell, Ma
Covered Bridge
36 158
Pepperell, Ma
Canoe Launch
58 32
Hollis
Runnels Bridge
23 9
Nashua
Mine Falls Park
9 5
Nashua
Canal Street
88 30
Brookline
Lancy Brook
26 26
Brookline
Nissitisit River
84 7
West Hollis
Nissitisit River
178 130
Mason
Walker Brook
54

Notes:

 


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